Treyarch has introduced a new Heist mode in his second Call of Duty: Black Ops 4 multiplayer beta test. I have played it on the PlayStation 4 several times and here is my review.
The Black Ops 4 multiplayer beta test lasts until Monday, August 13 at 10 am Pacific Time. In Heist mode, five human players compete against five human rivals. You have to find a bag of cash and then bring it to the collection point. It is reminiscent of similar modes in Counter-Strike and Battlefield Hardline and almost always ends in a kind of dramatic fight. 
Each battle has up to seven rounds, but the team that comes to four wins wins the game. You start with a pistol. The more rounds you win and the more money your team accumulates, the more you can buy upgrades in a store. As a rule I was able to convert to a light machine gun within a few laps. You also need to find a health pack and ammo on the map.
The bag of cash is a magnet for the fight. It pays to come first and then spread while waiting for the inevitable enemy storm. You are exposed if you grab the money, so you have to make sure your comrades are covering you up. Once you get the money, you have to walk around avoiding being shot.
Meanwhile, a withdrawal point appears on the map. If you have the bag, you have to make it to the pickup point and survive the timer. If you do that, your team wins the fight. You can also win the round by killing all enemies, since you can not respawn.
One of the interesting features is that you can revive your teammates who are shot. Once you get shot, you have to crawl around until somebody revives you. But if you are shot a second time while crawling, you are definitely out and you have to see the rest of the game.
One of my colleagues revived me nicely, but then he was shot. So it's best to crawl where it's safer to be revived. If you take your health on the battlefield, rather than simply putting it back on a timer, you force yourself to think more about your health, because you can not take health for granted.
Of course, it's about bringing the other team to die or crawl. It's a fun mode, and it feels good to make your favorite weapons and buy them at the store. It reminds you that pistol shooting in the first round is a real test of skill and teamwork.
Heist may be a copy of other games, but it's nice that Treyarch has added his own twists to the gameplay. Look at what Heist looks like in the videos I embedded in this post.
I enjoy the Heist mode, but I prefer other familiar modes like Team Deathmatch and Domination. But it's nice to see Treyarch experimenting a lot. The big mode we're all waiting for is the Battle Royale mode on a big card called Blackout.